/* roulang page: index */
:root {
  --primary: #1668E3;
  --primary-bright: #1B6DF2;
  --primary-light: rgba(22,104,227,.10);
  --accent: #F59E0B;
  --neon: #00D4FF;
  --nav-dark: #0B132B;
  --nav-text: #C6D0E3;
  --bg-body: #F6F9FD;
  --bg-card: #FFFFFF;
  --text-main: #1F2A44;
  --text-secondary: #5A6B85;
  --border-color: rgba(15,45,90,.08);
  --shadow-card: 0 8px 30px rgba(22,104,227,.08);
  --shadow-hover: 0 14px 40px rgba(22,104,227,.15);
  --radius-card: 16px;
  --radius-btn: 999px;
  --section-space: 96px;
  --section-space-mobile: 56px;
  --font-main: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.75;
  padding-top: 72px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: var(--primary); transition: color .25s ease; }
img { max-width: 100%; height: auto; }
button, input, select, textarea { font-family: inherit; }
.container { max-width: 1200px; }

/* ===== 暗色霓虹导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1050;
  background: var(--nav-dark);
  min-height: 72px;
  padding: 0;
  border-bottom: none;
}
.site-header::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon) 0%, rgba(0,212,255,.4) 40%, transparent 100%);
  pointer-events: none;
}
.site-header .navbar {
  padding: 0;
  min-height: 72px;
}
.site-header .navbar-brand {
  font-size: 1.45rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.01em;
  padding: 0;
  margin: 0;
  line-height: 1.2;
  display: inline-flex;
  align-items: center;
}
.site-header .navbar-brand:hover { color: #FFFFFF; }
.site-header .navbar-brand span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--neon);
  margin-left: 4px;
}
.site-header .navbar-nav { align-items: center; gap: 4px; }
.site-header .nav-link {
  color: var(--nav-text);
  font-size: .95rem;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  position: relative;
  transition: color .25s ease, text-shadow .25s ease, background .25s ease;
}
.site-header .nav-link:hover {
  color: #FFFFFF;
  text-shadow: 0 0 8px rgba(0,212,255,.5);
  background: rgba(255,255,255,.06);
}
.site-header .nav-link.active {
  color: #FFFFFF;
  text-shadow: 0 0 12px var(--neon), 0 0 24px rgba(0,212,255,.4);
  background: rgba(0,212,255,.1);
}
.site-header .nav-cta {
  margin-left: 16px;
  background: var(--neon);
  color: #0B132B;
  font-weight: 600;
  font-size: .92rem;
  padding: 10px 24px;
  border-radius: 999px;
  border: none;
  transition: box-shadow .25s ease, transform .25s ease, background .25s ease;
}
.site-header .nav-cta:hover {
  box-shadow: 0 0 18px rgba(0,212,255,.5);
  color: #0B132B;
  transform: translateY(-1px);
  background: #33DDFF;
}
.site-header .navbar-toggler {
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 8px;
  padding: 6px 10px;
  background: transparent;
}
.site-header .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(0,212,255,.3); }
.site-header .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
@media (max-width: 991.98px) {
  .site-header .navbar-collapse {
    background: var(--nav-dark);
    padding: 16px 20px 20px;
    border-radius: 0 0 16px 16px;
    margin-top: 8px;
    box-shadow: 0 16px 40px rgba(0,0,0,.35);
  }
  .site-header .navbar-nav { align-items: flex-start; width: 100%; }
  .site-header .nav-link { width: 100%; padding: 12px 16px; }
  .site-header .nav-cta { margin-left: 0; margin-top: 12px; width: 100%; text-align: center; }
}

/* ===== 通用按钮 ===== */
.btn-bs {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: .95rem;
  border: none;
  transition: all .25s ease;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.4;
}
.btn-bs-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(22,104,227,.2);
}
.btn-bs-primary:hover {
  background: var(--primary-bright);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(22,104,227,.3);
}
.btn-bs-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-bs-outline:hover {
  background: var(--primary);
  color: #FFFFFF;
  transform: translateY(-2px);
}
.btn-bs-neon {
  background: var(--neon);
  color: #0B132B;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0,212,255,.25);
}
.btn-bs-neon:hover {
  box-shadow: 0 0 22px rgba(0,212,255,.5), 0 6px 20px rgba(0,212,255,.2);
  color: #0B132B;
  transform: translateY(-2px);
}
.btn-bs:active { transform: scale(.97); }

/* ===== 通用板块 ===== */
.section { padding: var(--section-space) 0; position: relative; }
.section + .section { border-top: 1px solid var(--border-color); }
.section-head {
  margin-bottom: 44px;
  position: relative;
  z-index: 2;
}
.section-eyebrow {
  display: inline-block;
  font-size: .84rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: .02em;
}
.section-title {
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 10px;
}
.section-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.75;
}
.section-title-light { color: #FFFFFF; }
.section-sub-light { color: rgba(255,255,255,.75); }
@media (max-width: 767px) {
  .section { padding: var(--section-space-mobile) 0; }
  .section-head { margin-bottom: 32px; }
}

/* ===== Hero 竖屏感首屏 ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 84px;
  background: linear-gradient(160deg, #E8F1FD 0%, #F6F9FD 60%, #EDF5FE 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity: .08;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: 38px;
  left: 0;
  width: 140px;
  height: 4px;
  border-radius: 0 4px 4px 0;
  background: var(--neon);
  box-shadow: 0 0 16px rgba(0,212,255,.55);
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(22,104,227,.09);
  border: 1px solid rgba(22,104,227,.15);
  color: var(--primary);
  font-size: .86rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero-badge i {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--neon);
  display: inline-block;
  box-shadow: 0 0 8px rgba(0,212,255,.7);
  animation: pulse-dot 1.8s ease infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.75); }
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.18;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: -.01em;
}
.hero-title .text-gradient {
  background: linear-gradient(90deg, var(--primary), #3C7DEB);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 460px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 44px;
}
.hero-stats .stat-item h4 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  line-height: 1.2;
}
.hero-stats .stat-item p {
  font-size: .86rem;
  color: var(--text-secondary);
  margin: 0;
}
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-phone-frame {
  position: relative;
  width: 280px;
  max-width: 78vw;
  aspect-ratio: 9/16;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(180deg, #0E2A4E 0%, #0B132B 100%);
  box-shadow: 0 24px 60px rgba(11,19,43,.35), 0 0 0 6px rgba(255,255,255,.25);
}
.hero-phone-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-phone-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,19,43,.05) 0%, rgba(11,19,43,.4) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}
.hero-play-btn {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,.95);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease;
}
.hero-play-btn:hover {
  transform: translate(-50%, -50%) scale(1.08);
  box-shadow: 0 8px 40px rgba(0,212,255,.4);
}
.hero-play-btn svg { width: 24px; height: 24px; fill: var(--primary); margin-left: 3px; }
.hero-live-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: rgba(245,158,11,.9);
  color: #fff;
  font-size: .76rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.hero-live-badge::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #fff;
  animation: pulse-dot 1.2s ease infinite;
}
.hero-caption {
  color: rgba(255,255,255,.9);
  font-size: .85rem;
  font-weight: 500;
  text-shadow: 0 2px 8px rgba(0,0,0,.5);
}
.hero-float-card {
  position: absolute;
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  padding: 12px 16px;
  font-size: .82rem;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: float-y 3s ease-in-out infinite;
}
.hero-float-card .fc-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
}
.hero-float-card .fc-text strong { display: block; font-size: .88rem; color: var(--text-main); }
.hero-float-card .fc-text span { font-size: .76rem; color: var(--text-secondary); }
.hero-float-card.fc-left { left: -20px; top: 22%; }
.hero-float-card.fc-right { right: -10px; bottom: 18%; animation-delay: 1.4s; }
@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@media (max-width: 991.98px) {
  .hero { padding: 56px 0 72px; }
  .hero-visual { margin-top: 44px; }
  .hero-phone-frame { width: 240px; }
  .hero-float-card.fc-left { left: 0; top: 10%; }
  .hero-float-card.fc-right { right: 0; bottom: 12%; }
}
@media (max-width: 575.98px) {
  .hero { padding: 44px 0 60px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-float-card { display: none; }
}

/* ===== 爆款片段卡 ===== */
.clips-section { background: var(--bg-body); }
.h-scroll {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  padding: 8px 4px 22px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(22,104,227,.25) transparent;
}
.h-scroll::-webkit-scrollbar { height: 6px; }
.h-scroll::-webkit-scrollbar-track { background: transparent; }
.h-scroll::-webkit-scrollbar-thumb { background: rgba(22,104,227,.25); border-radius: 999px; }
.clip-card {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(8,30,60,.04);
  scroll-snap-align: start;
  transition: transform .3s ease, box-shadow .3s ease;
}
.clip-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.clip-cover {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: linear-gradient(160deg, #E8F1FD, #D5E6FA);
}
.clip-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.clip-card:hover .clip-cover img { transform: scale(1.04); }
.clip-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #fff;
  font-size: .76rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(245,158,11,.4);
}
.clip-duration {
  position: absolute;
  bottom: 12px; right: 12px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: .76rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.clip-body { padding: 16px 16px 14px; }
.clip-body h3 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0 0 6px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.85em;
}
.clip-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .8rem;
  color: var(--text-secondary);
}
.clip-views { display: inline-flex; align-items: center; gap: 4px; }
.clip-views svg { width: 14px; height: 14px; fill: currentColor; }

/* ===== 种草清单 ===== */
.checklist-section { background: var(--bg-card); }
.checklist {
  max-width: 760px;
  margin: 0 auto;
}
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  padding: 28px 8px;
  border-bottom: 1px solid var(--border-color);
  transition: background .25s ease;
}
.checklist-item:first-child { border-top: 1px solid var(--border-color); }
.checklist-item:hover { background: rgba(246,249,253,.8); }
.checklist-num {
  font-size: 2rem;
  font-weight: 800;
  color: rgba(22,104,227,.16);
  line-height: 1;
  min-width: 52px;
  font-family: "Inter", var(--font-main);
}
.checklist-item:hover .checklist-num { color: var(--primary); transition: color .25s ease; }
.checklist-content { flex: 1; }
.checklist-content h3 {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0 0 4px;
}
.checklist-content p {
  font-size: .92rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}
.checklist-btn {
  flex-shrink: 0;
  font-size: .84rem;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 999px;
  font-weight: 500;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity .25s ease, transform .25s ease, background .25s ease;
}
.checklist-item:hover .checklist-btn { opacity: 1; transform: translateX(0); }
.checklist-btn:hover { background: rgba(22,104,227,.2); }
@media (max-width: 575.98px) {
  .checklist-item { gap: 14px; padding: 22px 4px; }
  .checklist-num { font-size: 1.5rem; min-width: 36px; }
  .checklist-btn { opacity: 1; transform: none; }
}

/* ===== 评论口碑条 ===== */
.reviews-section { background: linear-gradient(180deg, #F0F6FD 0%, var(--bg-body) 100%); }
.review-card {
  width: 300px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 22px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(8,30,60,.04);
  scroll-snap-align: start;
  transition: transform .3s ease, box-shadow .3s ease;
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.review-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  font-weight: 600;
  flex-shrink: 0;
}
.review-user { flex: 1; min-width: 0; }
.review-user strong {
  font-size: .92rem;
  color: var(--text-main);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.review-user span {
  font-size: .78rem;
  color: var(--text-secondary);
}
.review-stars {
  color: var(--accent);
  font-size: .8rem;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 2px;
}
.review-stars svg { width: 14px; height: 14px; fill: var(--accent); }
.review-text {
  font-size: .88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.review-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-size: .7rem;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
}
.review-card { position: relative; }

/* ===== 最新信息 / 资讯动态 ===== */
.news-section { background: var(--bg-body); }
.news-card {
  display: block;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(8,30,60,.04);
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}
.news-thumb {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: linear-gradient(160deg, #E8F1FD, #D5E6FA);
}
.news-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(255,255,255,.92);
  color: var(--primary);
  font-size: .76rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
.news-body { padding: 20px 20px 18px; }
.news-body h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0 0 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3em;
}
.news-body p {
  font-size: .88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .8rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}
.news-more {
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-more svg { width: 14px; height: 14px; fill: currentColor; }
.news-empty {
  border: 2px dashed rgba(22,104,227,.2);
  border-radius: 20px;
  background: rgba(255,255,255,.7);
  padding: 56px 24px;
  text-align: center;
  color: var(--text-secondary);
}
.news-empty svg {
  width: 44px; height: 44px;
  margin-bottom: 12px;
  fill: rgba(22,104,227,.3);
}
.news-empty p { margin: 0; font-size: .95rem; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-card); }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.bs-accordion .accordion-item {
  border: none;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
}
.bs-accordion .accordion-item:first-child { border-top: 1px solid var(--border-color); }
.bs-accordion .accordion-button {
  background: transparent;
  box-shadow: none;
  font-size: .97rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 20px 40px 20px 0;
  position: relative;
}
.bs-accordion .accordion-button::after {
  background-image: none;
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary);
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  transition: transform .25s ease;
  width: auto; height: auto;
}
.bs-accordion .accordion-button:not(.collapsed)::after {
  transform: translateY(-50%) rotate(45deg);
}
.bs-accordion .accordion-button:focus {
  box-shadow: none;
  border-color: transparent;
}
.bs-accordion .accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--primary);
}
.bs-accordion .accordion-body {
  padding: 0 40px 20px 0;
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== 一键跟买 CTA ===== */
.cta-section {
  position: relative;
  overflow: hidden;
  padding: 84px 0;
  background: linear-gradient(120deg, #E6F2FF 0%, #E0F7FA 100%);
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: .06;
  pointer-events: none;
}
.cta-section::after {
  content: "";
  position: absolute;
  top: -80px; right: -80px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,.18) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.cta-inner .section-title { margin-bottom: 14px; }
.cta-inner .section-sub { margin: 0 auto 32px; }
.cta-btn-wrap { display: flex; justify-content: center; }

/* ===== Footer ===== */
.site-footer {
  background: var(--nav-dark);
  color: rgba(255,255,255,.75);
  padding: 64px 0 0;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon) 30%, var(--neon) 70%, transparent);
  opacity: .8;
}
.footer-brand {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  display: block;
}
.footer-brand span {
  color: var(--neon);
  font-size: .96rem;
  font-weight: 500;
  margin-left: 3px;
}
.footer-desc {
  font-size: .88rem;
  color: rgba(255,255,255,.58);
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 280px;
}
.footer-col h5 {
  font-size: .95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h5::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 28px; height: 2px;
  background: var(--neon);
  border-radius: 2px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: rgba(255,255,255,.6);
  font-size: .88rem;
  transition: color .25s ease, text-decoration-color .25s ease;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
}
.footer-col ul a:hover {
  color: var(--neon);
  text-decoration-color: var(--neon);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 12px;
}
.footer-contact svg { width: 16px; height: 16px; fill: var(--neon); flex-shrink: 0; }
.footer-bottom {
  margin-top: 48px;
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  font-size: .82rem;
  color: rgba(255,255,255,.4);
  text-align: center;
}
@media (max-width: 767px) {
  .site-footer { padding: 48px 0 0; }
  .footer-col { margin-bottom: 28px; }
  .footer-bottom { margin-top: 30px; }
}

/* ===== 辅助 ===== */
.text-secondary-bs { color: var(--text-secondary); }
.mt-64 { margin-top: 64px; }
.mb-64 { margin-bottom: 64px; }
@media (max-width: 575.98px) {
  .hero-actions .btn-bs { min-width: 140px; }
  .news-body { padding: 16px; }
  .clip-card { width: 230px; }
  .review-card { width: 270px; }
}
a:focus-visible, .btn:focus-visible {
  outline: 3px solid rgba(0,212,255,.5);
  outline-offset: 2px;
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --bs-primary: #1668E3;
            --bs-neon: #00D4FF;
            --bs-dark: #0B132B;
            --bs-bg: #F6F9FD;
            --bs-card: #FFFFFF;
            --bs-text: #1F2A44;
            --bs-muted: #5A6B85;
            --bs-accent: #F59E0B;
            --bs-border: rgba(15, 45, 90, .08);
            --bs-radius-sm: 12px;
            --bs-radius-card: 20px;
            --bs-radius-btn: 999px;
            --bs-shadow: 0 8px 30px rgba(22, 104, 227, .08);
            --bs-shadow-hover: 0 14px 40px rgba(22, 104, 227, .15);
            --bs-transition: .25s ease;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background-color: var(--bs-bg);
            color: var(--bs-text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--bs-primary);
            text-decoration: none;
            transition: color var(--bs-transition);
        }
        a:hover {
            color: #0E4FB8;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ============ 暗色霓虹导航 ============ */
        .site-header {
            background: var(--bs-dark);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 24px rgba(11, 19, 43, .35);
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(to right, var(--bs-neon), transparent) 1;
        }
        .site-header .navbar {
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }
        .site-header .navbar-brand {
            color: #fff;
            font-weight: 700;
            font-size: 1.45rem;
            letter-spacing: .01em;
            line-height: 1.2;
        }
        .site-header .navbar-brand span {
            color: var(--bs-neon);
            font-size: .92rem;
            font-weight: 600;
            margin-left: .15rem;
        }
        .site-header .navbar-brand:hover {
            color: #fff;
        }
        .navbar-nav {
            gap: .5rem;
        }
        .navbar-nav .nav-link {
            color: #C6D0E3;
            font-weight: 500;
            font-size: .95rem;
            padding: .55rem 1.1rem;
            border-radius: 999px;
            position: relative;
            transition: all var(--bs-transition);
        }
        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }
        .navbar-nav .nav-link.active {
            color: #fff;
            background: rgba(0, 212, 255, .08);
            text-shadow: 0 0 12px var(--bs-neon);
            box-shadow: inset 0 0 0 1px rgba(0, 212, 255, .2);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--bs-neon);
            box-shadow: 0 0 8px var(--bs-neon);
        }
        .btn-bs-neon {
            background: var(--bs-neon);
            color: #0B132B;
            font-weight: 700;
            border: none;
            border-radius: 999px;
            padding: .55rem 1.4rem;
            font-size: .92rem;
            transition: all var(--bs-transition);
            box-shadow: 0 2px 12px rgba(0, 212, 255, .2);
        }
        .btn-bs-neon:hover {
            color: #0B132B;
            box-shadow: 0 0 22px rgba(0, 212, 255, .55);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border-color: rgba(255, 255, 255, .35);
            padding: .35rem .55rem;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 212, 255, .3);
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--bs-dark);
                padding: 1rem 1.25rem 1.5rem;
                border-radius: 0 0 20px 20px;
                box-shadow: 0 16px 40px rgba(11, 19, 43, .4);
            }
            .navbar-nav {
                gap: .25rem;
                margin-bottom: .75rem;
            }
            .navbar-nav .nav-link {
                padding: .7rem 1rem;
            }
            .nav-cta {
                display: inline-block;
                width: auto;
            }
        }

        /* ============ 通用按钮 ============ */
        .btn-bs-primary {
            background: var(--bs-primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: .8rem 1.9rem;
            font-weight: 600;
            font-size: .98rem;
            transition: all var(--bs-transition);
            box-shadow: 0 4px 16px rgba(22, 104, 227, .25);
        }
        .btn-bs-primary:hover {
            background: #0E4FB8;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(22, 104, 227, .32);
        }
        .btn-bs-outline {
            background: #fff;
            color: var(--bs-primary);
            border: 1px solid var(--bs-primary);
            border-radius: 999px;
            padding: .75rem 1.8rem;
            font-weight: 600;
            font-size: .98rem;
            transition: all var(--bs-transition);
        }
        .btn-bs-outline:hover {
            background: var(--bs-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(22, 104, 227, .2);
        }
        .btn-lg {
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
        }
        .btn:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(22, 104, 227, .2);
        }

        /* ============ 页面 Hero（分类页窄头） ============ */
        .page-hero {
            position: relative;
            padding: 88px 0 64px;
            background:
                linear-gradient(135deg, rgba(240, 247, 255, .96), rgba(224, 240, 255, .92)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--bs-border);
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            right: -40px;
            bottom: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, .14), transparent 65%);
            pointer-events: none;
        }
        .page-hero-inner {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-links {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: .35rem;
            font-size: .88rem;
            color: var(--bs-muted);
            margin-bottom: 18px;
        }
        .breadcrumb-links a {
            color: var(--bs-muted);
        }
        .breadcrumb-links a:hover {
            color: var(--bs-primary);
        }
        .breadcrumb-links .sep {
            color: rgba(90, 107, 133, .5);
        }
        .page-hero h1 {
            font-size: clamp(2rem, 3.4vw, 3rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--bs-text);
            margin-bottom: 14px;
        }
        .page-hero h1 .text-primary {
            color: var(--bs-primary) !important;
        }
        .page-hero .hero-sub {
            font-size: 1.08rem;
            color: var(--bs-muted);
            max-width: 560px;
            line-height: 1.75;
        }

        /* ============ 图文交错区块 ============ */
        .section-flex {
            padding: 88px 0;
        }
        .section-flex:nth-of-type(even) {
            background: #fff;
        }
        .section-flex .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: rgba(22, 104, 227, .08);
            color: var(--bs-primary);
            font-size: .82rem;
            font-weight: 600;
            padding: .28rem .85rem;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .section-flex h2 {
            font-size: clamp(1.5rem, 2.2vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--bs-text);
            margin-bottom: 18px;
        }
        .section-flex .section-lead {
            font-size: 1rem;
            color: var(--bs-text);
            line-height: 1.85;
            margin-bottom: 22px;
            max-width: 92%;
        }
        .section-flex .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 26px;
        }
        .section-flex .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: .6rem;
            padding: .5rem 0;
            font-size: .95rem;
            color: var(--bs-text);
        }
        .section-flex .feature-list li i {
            color: var(--bs-primary);
            margin-top: .2rem;
            font-size: .92rem;
            width: 18px;
            flex-shrink: 0;
        }
        .section-flex .media {
            position: relative;
            border-radius: var(--bs-radius-card);
            overflow: hidden;
            box-shadow: var(--bs-shadow);
            transition: box-shadow var(--bs-transition);
        }
        .section-flex .media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .section-flex .media:hover {
            box-shadow: var(--bs-shadow-hover);
        }
        .section-flex .media:hover img {
            transform: scale(1.03);
        }
        .media-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--bs-accent);
            color: #fff;
            font-size: .78rem;
            font-weight: 700;
            padding: .3rem .8rem;
            border-radius: 999px;
            box-shadow: 0 4px 12px rgba(245, 158, 11, .35);
        }
        .media-overlay-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 20px 16px;
            background: linear-gradient(to top, rgba(11, 19, 43, .75), transparent);
            color: #fff;
            font-size: .88rem;
            font-weight: 500;
        }
        @media (max-width: 767.98px) {
            .section-flex {
                padding: 56px 0;
            }
            .section-flex .media img {
                height: 260px;
            }
            .section-flex .section-lead {
                max-width: 100%;
            }
            .section-flex .row .order-last-mobile {
                order: -1 !important;
                margin-bottom: 24px;
            }
        }

        /* ============ 要点说明块（2列特质） ============ */
        .section-essentials {
            padding: 72px 0;
            background: var(--bs-bg);
        }
        .essentials-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .essential-item {
            background: var(--bs-card);
            border: 1px solid var(--bs-border);
            border-radius: var(--bs-radius-card);
            padding: 32px;
            box-shadow: var(--bs-shadow);
            transition: all var(--bs-transition);
            position: relative;
            overflow: hidden;
        }
        .essential-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--bs-primary), var(--bs-neon));
            opacity: .6;
        }
        .essential-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--bs-shadow-hover);
        }
        .essential-item .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(22, 104, 227, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--bs-primary);
            margin-bottom: 18px;
        }
        .essential-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--bs-text);
            margin-bottom: 10px;
        }
        .essential-item p {
            font-size: .95rem;
            color: var(--bs-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }
        @media (max-width: 767.98px) {
            .essentials-wrap {
                grid-template-columns: 1fr;
            }
        }

        /* ============ FAQ（分割线手风琴） ============ */
        .section-faq {
            padding: 80px 0;
            background: #fff;
        }
        .section-faq .section-heading {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-faq .section-heading h2 {
            font-size: clamp(1.5rem, 2.2vw, 2.1rem);
            font-weight: 700;
            color: var(--bs-text);
        }
        .section-faq .section-heading p {
            color: var(--bs-muted);
            margin-top: 8px;
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: none;
            border-bottom: 1px solid var(--bs-border);
            background: transparent;
            border-radius: 0;
        }
        .faq-item .accordion-button {
            background: transparent;
            border: none;
            color: var(--bs-text);
            font-size: 1rem;
            font-weight: 600;
            padding: 1.2rem .25rem;
            box-shadow: none;
            transition: color var(--bs-transition);
        }
        .faq-item .accordion-button:hover {
            color: var(--bs-primary);
        }
        .faq-item .accordion-button:not(.collapsed) {
            color: var(--bs-primary);
            background: transparent;
            box-shadow: none;
        }
        .faq-item .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='%231668E3' xmlns='http://www.w3.org/2000/svg'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .faq-item .accordion-body {
            padding: .25rem .25rem 1.25rem;
            color: var(--bs-muted);
            font-size: .95rem;
            line-height: 1.75;
        }

        /* ============ CTA ============ */
        .section-cta {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(240, 247, 255, .9), rgba(224, 244, 255, .95));
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, .18), transparent 60%);
        }
        .section-cta .cta-content {
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }
        .section-cta h2 {
            font-size: clamp(1.6rem, 2.4vw, 2.2rem);
            font-weight: 700;
            color: var(--bs-text);
            margin-bottom: 14px;
        }
        .section-cta p {
            font-size: 1.05rem;
            color: var(--bs-muted);
            margin-bottom: 30px;
        }
        .btn-cta-neon {
            background: var(--bs-neon);
            color: #0B132B;
            border: none;
            border-radius: 999px;
            padding: .9rem 2.4rem;
            font-weight: 700;
            font-size: 1.02rem;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            box-shadow: 0 4px 18px rgba(0, 212, 255, .3);
            transition: all var(--bs-transition);
        }
        .btn-cta-neon:hover {
            color: #0B132B;
            box-shadow: 0 0 26px rgba(0, 212, 255, .55);
            transform: translateY(-2px);
        }
        .btn-cta-neon i {
            font-size: .9rem;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bs-dark);
            color: #C6D0E3;
            padding: 72px 0 32px;
            border-top: 2px solid transparent;
            border-image: linear-gradient(to right, var(--bs-neon), transparent) 1;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 14px;
        }
        .footer-brand span {
            color: var(--bs-neon);
            font-size: .95rem;
            font-weight: 600;
        }
        .footer-desc {
            font-size: .92rem;
            color: #8FA0BD;
            line-height: 1.8;
            max-width: 300px;
            margin-bottom: 0;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: .6rem;
        }
        .footer-col ul li a {
            color: #8FA0BD;
            font-size: .92rem;
            transition: all var(--bs-transition);
            position: relative;
        }
        .footer-col ul li a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 1px;
            background: var(--bs-neon);
            transition: width var(--bs-transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-col ul li a:hover::after {
            width: 100%;
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: .6rem;
            color: #8FA0BD;
            font-size: .9rem;
        }
        .footer-contact li svg {
            width: 18px;
            height: 18px;
            fill: var(--bs-neon);
            flex-shrink: 0;
            margin-top: .2rem;
            opacity: .8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 26px;
            margin-top: 56px;
            text-align: center;
            font-size: .86rem;
            color: #64748F;
        }
        @media (max-width: 991.98px) {
            .site-footer {
                padding: 56px 0 24px;
            }
            .footer-bottom {
                margin-top: 36px;
            }
        }

        /* ============ 响应式补充 ============ */
        @media (max-width: 575.98px) {
            .page-hero {
                padding: 64px 0 48px;
            }
            .page-hero .hero-sub {
                font-size: .98rem;
            }
            .btn-bs-primary,
            .btn-bs-outline {
                width: 100%;
                text-align: center;
                justify-content: center;
                margin-bottom: .5rem;
            }
            .section-flex .media img {
                height: 230px;
            }
        }

/* roulang page: article */
:root {
  --primary: #1668E3;
  --primary-rgb: 22,104,227;
  --primary-light: #1B6DF2;
  --accent: #F59E0B;
  --neon: #00D4FF;
  --dark-bg: #0B132B;
  --dark-bg-soft: #0D1830;
  --body-bg: #F6F9FD;
  --card-bg: #FFFFFF;
  --text-main: #1F2A44;
  --text-secondary: #5A6B85;
  --border-color: rgba(15,45,90,.08);
  --shadow-card: 0 8px 30px rgba(22,104,227,.08);
  --shadow-hover: 0 14px 40px rgba(22,104,227,.15);
  --radius-sm: 12px;
  --radius: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --font-main: "PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  font-size:1rem;
  line-height:1.75;
  color:var(--text-main);
  background:var(--body-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button:focus-visible,input:focus-visible,a:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.container{max-width:1200px}
section[id="cta"]{scroll-margin-top:90px}

/* ===== Header 暗色霓虹导航 ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1050;
  background:var(--dark-bg);
  border-bottom:2px solid transparent;
  border-image:linear-gradient(90deg,var(--neon),rgba(0,212,255,.1)) 1;
  box-shadow:0 8px 30px rgba(11,19,43,.35);
}
.site-header .navbar{min-height:72px;padding:0}
.navbar-brand{
  display:flex;
  align-items:baseline;
  gap:4px;
  font-size:1.5rem;
  font-weight:700;
  color:#fff !important;
  letter-spacing:.5px;
}
.navbar-brand span{
  font-size:1rem;
  font-weight:400;
  color:var(--neon);
}
.navbar-nav{gap:4px}
.nav-link{
  color:#C6D0E3 !important;
  font-size:.9375rem;
  font-weight:500;
  padding:10px 18px !important;
  border-radius:var(--radius-pill);
  transition:color .25s,text-shadow .25s;
  position:relative;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:18px;right:18px;bottom:2px;
  height:2px;
  background:var(--neon);
  border-radius:2px;
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .25s,transform .25s;
}
.nav-link:hover{
  color:#fff !important;
  text-shadow:0 0 12px rgba(0,212,255,.55);
}
.nav-link:hover::after{
  opacity:.8;
  transform:scaleX(1);
}
.nav-link.active{
  color:#fff !important;
  text-shadow:0 0 10px var(--neon),0 0 22px rgba(0,212,255,.35);
}
.nav-link.active::after{
  opacity:1;
  transform:scaleX(1);
}
.nav-cta{
  margin-left:16px;
  padding:10px 26px;
  font-weight:600;
  font-size:.9375rem;
  color:var(--dark-bg) !important;
  background:var(--neon);
  border:none;
  border-radius:var(--radius-pill);
  transition:box-shadow .25s,transform .25s;
  white-space:nowrap;
}
.nav-cta:hover{
  color:var(--dark-bg) !important;
  box-shadow:0 0 18px rgba(0,212,255,.55);
  transform:translateY(-1px);
}
.navbar-toggler{
  border:1px solid rgba(198,208,227,.35);
  border-radius:10px;
  padding:6px 10px;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(0,212,255,.22);outline:none}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23C6D0E3' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
  width:1.4em;height:1.4em;
}
@media (max-width:991.98px){
  .navbar-collapse{
    background:var(--dark-bg-soft);
    border:1px solid rgba(0,212,255,.14);
    border-radius:14px;
    padding:18px 20px 20px;
    margin-top:10px;
    box-shadow:0 16px 40px rgba(0,0,0,.35);
  }
  .navbar-nav{width:100%}
  .navbar-nav .nav-item{width:100%}
  .navbar-nav .nav-link{
    padding:13px 6px !important;
    border-bottom:1px solid rgba(198,208,227,.08);
  }
  .navbar-nav .nav-link::after{display:none}
  .nav-cta{
    margin:16px 0 0;
    display:block;
    text-align:center;
  }
}

/* ===== 按钮 ===== */
.btn-bs-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:12px 30px;
  background:var(--primary);
  color:#fff !important;
  border:none;
  border-radius:var(--radius-pill);
  font-weight:600;
  font-size:1rem;
  transition:background .25s,transform .25s,box-shadow .25s;
  gap:8px;
}
.btn-bs-primary:hover{
  background:var(--primary-light);
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(var(--primary-rgb),.3);
}
.btn-bs-primary:active{
  transform:translateY(0) scale(.97);
}
.btn-bs-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:11px 28px;
  background:#fff;
  color:var(--primary) !important;
  border:1px solid rgba(var(--primary-rgb),.35);
  border-radius:var(--radius-pill);
  font-weight:600;
  font-size:.9375rem;
  transition:all .25s;
  gap:8px;
}
.btn-bs-outline:hover{
  background:var(--primary);
  color:#fff !important;
  border-color:var(--primary);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(var(--primary-rgb),.18);
}
.btn-bs-neon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:13px 36px;
  background:var(--neon);
  color:var(--dark-bg) !important;
  border:none;
  border-radius:var(--radius-pill);
  font-weight:700;
  font-size:1rem;
  transition:box-shadow .25s,transform .25s;
  gap:8px;
}
.btn-bs-neon:hover{
  box-shadow:0 0 24px rgba(0,212,255,.6);
  transform:translateY(-2px);
}
.btn-bs-neon:active{
  transform:translateY(0) scale(.97);
}

/* ===== 文章页 Hero ===== */
.article-hero{
  padding:130px 0 44px;
  background:
    linear-gradient(135deg,rgba(246,249,253,.95),rgba(221,235,255,.88)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--border-color);
  position:relative;
}
.article-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:3px;
  background:linear-gradient(90deg,var(--neon),transparent 60%);
  opacity:.5;
}
.breadcrumb-nav{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:.875rem;
  color:var(--text-secondary);
  margin-bottom:22px;
}
.breadcrumb-nav a{
  color:var(--primary);
  font-weight:500;
  transition:color .2s;
}
.breadcrumb-nav a:hover{color:var(--primary-light)}
.breadcrumb-sep{
  color:#B7C2D8;
  font-style:normal;
  font-weight:600;
}
.breadcrumb-current{
  color:var(--text-secondary);
  max-width:420px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-hero h1{
  font-size:clamp(1.7rem,3vw,2.5rem);
  font-weight:700;
  line-height:1.28;
  color:var(--text-main);
  margin-bottom:18px;
  max-width:820px;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  font-size:.875rem;
  color:var(--text-secondary);
}
.meta-dot{
  width:4px;height:4px;
  border-radius:50%;
  background:#C2CDE0;
  display:inline-block;
}
.meta-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.meta-item svg{
  width:15px;height:15px;
  fill:currentColor;
}
.meta-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(var(--primary-rgb),.09);
  color:var(--primary);
  padding:3px 14px;
  border-radius:var(--radius-pill);
  font-weight:600;
  font-size:.8125rem;
}

/* ===== 正文区 ===== */
.article-body{
  padding:52px 0 20px;
}
.article-content-wrap{
  max-width:860px;
  margin:0 auto;
}
.article-content{
  background:var(--card-bg);
  border-radius:var(--radius-lg);
  padding:48px 56px;
  box-shadow:var(--shadow-card);
  border:1px solid rgba(8,30,60,.04);
  overflow:visible;
}
.article-content > p:first-of-type{
  font-size:1.05rem;
  color:#24314F;
}
.article-content p{
  margin-bottom:1.4rem;
  color:#2A3750;
}
.article-content h2{
  font-size:1.45rem;
  font-weight:700;
  line-height:1.35;
  margin:2.4rem 0 1rem;
  padding-left:15px;
  border-left:4px solid var(--primary);
  color:var(--text-main);
}
.article-content h3{
  font-size:1.18rem;
  font-weight:600;
  margin:2rem 0 .85rem;
  color:var(--text-main);
}
.article-content blockquote{
  border-left:3px solid var(--primary);
  background:rgba(var(--primary-rgb),.045);
  padding:16px 22px;
  margin:1.5rem 0;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-secondary);
  font-style:normal;
}
.article-content ul,
.article-content ol{
  padding-left:1.4rem;
  margin-bottom:1.4rem;
}
.article-content li{
  margin-bottom:.45rem;
  color:#2A3750;
}
.article-content a{
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:3px;
}
.article-content a:hover{
  color:var(--primary-light);
  text-decoration-thickness:2px;
}
.article-content img{
  max-width:100%;
  height:auto;
  border-radius:var(--radius-sm);
  margin:1.5rem 0 .5rem;
  box-shadow:0 6px 18px rgba(22,104,227,.08);
}
.article-content img + em{
  display:block;
  text-align:center;
  font-size:.8125rem;
  color:var(--text-secondary);
  margin-bottom:1.2rem;
  font-style:normal;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.5rem 0;
  font-size:.9125rem;
  color:#2A3750;
}
.article-content th{
  background:rgba(var(--primary-rgb),.06);
  font-weight:600;
  text-align:left;
  color:var(--text-main);
}
.article-content th,
.article-content td{
  border:1px solid rgba(15,45,90,.09);
  padding:10px 14px;
}
.article-content tbody tr:nth-child(even) td{
  background:rgba(246,249,253,.7);
}
.article-content pre{
  background:var(--dark-bg);
  color:#E6EDF7;
  padding:18px 22px;
  border-radius:var(--radius-sm);
  overflow-x:auto;
  font-size:.875rem;
  line-height:1.65;
  margin:1.5rem 0;
}
.article-content code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
.article-content p code{
  background:rgba(var(--primary-rgb),.08);
  color:var(--primary);
  padding:2px 8px;
  border-radius:6px;
  font-size:.875em;
}
.article-content strong{
  color:var(--text-main);
  font-weight:700;
}

/* 内容未找到 */
.article-not-found{
  background:var(--card-bg);
  border-radius:var(--radius-lg);
  padding:64px 40px;
  text-align:center;
  box-shadow:var(--shadow-card);
  border:1px dashed rgba(22,104,227,.2);
}
.article-not-found-icon{
  width:72px;height:72px;
  margin:0 auto 20px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(var(--primary-rgb),.08);
  color:var(--primary);
}
.article-not-found-icon svg{width:34px;height:34px}
.article-not-found h2{
  font-size:1.4rem;
  font-weight:700;
  margin-bottom:10px;
}
.article-not-found p{
  color:var(--text-secondary);
  margin-bottom:26px;
}

/* ===== 文末标签 ===== */
.article-end{
  padding:14px 0 4px;
}
.article-end-bar{
  max-width:860px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding:18px 0;
  border-top:1px solid var(--border-color);
  border-bottom:1px solid var(--border-color);
}
.article-tags{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
}
.tag-label{
  font-size:.8125rem;
  color:var(--text-secondary);
  font-weight:500;
  margin-right:2px;
}
.tag-item{
  display:inline-flex;
  align-items:center;
  background:rgba(var(--primary-rgb),.07);
  color:var(--primary);
  font-size:.8125rem;
  font-weight:500;
  padding:5px 16px;
  border-radius:var(--radius-pill);
  cursor:default;
  transition:background .2s,color .2s;
}
.tag-item:hover{
  background:var(--primary);
  color:#fff;
}

/* ===== 相关推荐 ===== */
.related-section{
  padding:64px 0 72px;
}
.section-head{
  margin-bottom:36px;
  text-align:center;
}
.section-head .section-eyebrow{
  display:inline-block;
  font-size:.8125rem;
  font-weight:600;
  color:var(--primary);
  letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:6px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.4vw,2rem);
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.section-head p{
  color:var(--text-secondary);
  max-width:560px;
  margin:0 auto;
  font-size:.9375rem;
}
.related-card{
  display:block;
  background:var(--card-bg);
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid rgba(8,30,60,.04);
  box-shadow:var(--shadow-card);
  transition:transform .25s,box-shadow .25s;
  height:100%;
}
.related-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-hover);
}
.related-img{
  aspect-ratio:16/10;
  overflow:hidden;
  position:relative;
  background:linear-gradient(135deg,#E2EDFB,#C9DCF8);
}
.related-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s;
}
.related-card:hover .related-img img{
  transform:scale(1.04);
}
.related-img::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(11,19,43,.08));
}
.related-body{
  padding:20px 22px 24px;
}
.related-tag{
  display:inline-block;
  font-size:.75rem;
  font-weight:600;
  color:var(--primary);
  background:rgba(var(--primary-rgb),.08);
  padding:3px 12px;
  border-radius:var(--radius-pill);
  margin-bottom:10px;
}
.related-body h3{
  font-size:1.0625rem;
  font-weight:600;
  line-height:1.45;
  margin-bottom:8px;
  color:var(--text-main);
  transition:color .2s;
}
.related-card:hover .related-body h3{
  color:var(--primary);
}
.related-body p{
  font-size:.875rem;
  color:var(--text-secondary);
  line-height:1.6;
  margin:0;
}

/* ===== FAQ ===== */
.faq-section{
  padding:76px 0;
  background:#fff;
  border-top:1px solid var(--border-color);
  border-bottom:1px solid var(--border-color);
}
.faq-head{
  text-align:center;
  margin-bottom:46px;
}
.faq-head h2{
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.faq-head p{
  color:var(--text-secondary);
  font-size:.9375rem;
}
.faq-accordion{
  max-width:800px;
  margin:0 auto;
}
.faq-accordion .accordion-item{
  background:transparent;
  border:1px solid transparent;
  border-bottom:1px solid rgba(15,45,90,.09);
  border-radius:0 !important;
}
.faq-accordion .accordion-item:first-child{
  border-top:1px solid rgba(15,45,90,.09);
}
.faq-accordion .accordion-button{
  background:transparent;
  box-shadow:none;
  padding:22px 4px;
  font-size:1rem;
  font-weight:600;
  color:var(--text-main);
  border-radius:0 !important;
  transition:color .2s;
}
.faq-accordion .accordion-button:hover{
  color:var(--primary);
}
.faq-accordion .accordion-button:focus{
  box-shadow:none;
  border:0;
  background:transparent;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:transparent;
  color:var(--primary);
  box-shadow:none;
}
.faq-accordion .accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%231668E3' viewBox='0 0 16 16'%3E%3Cpath d='M8 4a.75.75 0 0 1 .75.75v2.5h2.5a.75.75 0 0 1 0 1.5h-2.5v2.5a.75.75 0 0 1-1.5 0v-2.5h-2.5a.75.75 0 0 1 0-1.5h2.5v-2.5A.75.75 0 0 1 8 4z'/%3E%3C/svg%3E");
  transition:transform .3s ease;
  width:18px;height:18px;
  background-size:contain;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
}
.faq-accordion .accordion-body{
  padding:0 44px 22px 4px;
  font-size:.9375rem;
  color:var(--text-secondary);
  line-height:1.7;
}

/* ===== CTA ===== */
.cta-section{
  padding:88px 0;
  background:
    linear-gradient(135deg,rgba(22,104,227,.04),rgba(0,212,255,.06)),
    linear-gradient(180deg,#F6F9FD,#EDF4FF);
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  top:24px;right:6%;
  width:150px;height:150px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,212,255,.14),transparent 65%);
}
.cta-section::after{
  content:"";
  position:absolute;
  bottom:-30px;left:8%;
  width:200px;height:200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(22,104,227,.12),transparent 65%);
}
.cta-inner{
  position:relative;
  z-index:2;
  text-align:center;
  max-width:720px;
  margin:0 auto;
}
.cta-inner h2{
  font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:700;
  color:var(--text-main);
  margin-bottom:14px;
}
.cta-inner p{
  font-size:1.0625rem;
  color:var(--text-secondary);
  margin-bottom:32px;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--dark-bg);
  color:#C6D0E3;
  padding:64px 0 28px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,var(--neon),rgba(0,212,255,.08) 40%,transparent);
}
.footer-brand{
  display:flex;
  align-items:baseline;
  gap:4px;
  font-size:1.5rem;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand span{
  font-size:1rem;
  font-weight:400;
  color:var(--neon);
}
.footer-desc{
  font-size:.875rem;
  line-height:1.7;
  color:#8FA0BE;
  max-width:340px;
  margin-bottom:0;
}
.footer-col h5{
  color:#fff;
  font-size:.9375rem;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul a{
  color:#8FA0BE;
  font-size:.875rem;
  transition:color .2s;
  position:relative;
}
.footer-col ul a:hover{
  color:var(--neon);
}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:.875rem;
  color:#8FA0BE;
  margin-bottom:12px;
}
.footer-contact svg{
  width:16px;height:16px;
  fill:var(--neon);
  flex-shrink:0;
  margin-top:5px;
}
.footer-bottom{
  border-top:1px solid rgba(198,208,227,.1);
  margin-top:42px;
  padding-top:22px;
  text-align:center;
  font-size:.8125rem;
  color:#6C7D9C;
}

/* ===== 响应式 ===== */
@media (max-width:991.98px){
  .article-content-wrap{
    max-width:100%;
  }
  .article-content{
    padding:36px 32px;
  }
  .site-footer{
    padding-top:48px;
  }
}
@media (max-width:767.98px){
  .article-hero{
    padding:108px 0 34px;
  }
  .article-hero h1{
    font-size:1.55rem;
  }
  .article-content{
    padding:28px 20px;
    border-radius:16px;
  }
  .article-content h2{
    font-size:1.28rem;
  }
  .article-content h3{
    font-size:1.1rem;
  }
  .article-end-bar{
    flex-direction:column;
    align-items:flex-start;
  }
  .related-section{
    padding:52px 0 56px;
  }
  .faq-section{
    padding:56px 0;
  }
  .cta-section{
    padding:64px 0;
  }
  .footer-col ul{
    margin-bottom:20px;
  }
}
@media (max-width:575.98px){
  .article-content{
    padding:24px 16px;
  }
  .article-content table{
    font-size:.8125rem;
  }
  .article-content th,
  .article-content td{
    padding:7px 10px;
  }
  .breadcrumb-current{
    max-width:200px;
  }
  .article-meta{
    gap:8px;
    font-size:.8125rem;
  }
}

/* roulang page: category2 */
:root {
            --bs-main: #1668E3;
            --bs-main-hover: #1B6DF2;
            --bs-amber: #F59E0B;
            --bs-neon: #00D4FF;
            --bs-dark: #0B132B;
            --bs-bg: #F6F9FD;
            --bs-card: #FFFFFF;
            --bs-text: #1F2A44;
            --bs-text-2: #5A6B85;
            --bs-line: rgba(15, 45, 90, .08);
            --bs-radius: 16px;
            --bs-radius-lg: 20px;
            --bs-shadow: 0 8px 30px rgba(22, 104, 227, .08);
            --bs-shadow-hover: 0 14px 40px rgba(22, 104, 227, .15);
            --bs-space: 96px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background: var(--bs-bg);
            color: var(--bs-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--bs-main);
            transition: color .25s ease;
        }

        a:hover {
            color: var(--bs-main-hover);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        :target {
            scroll-margin-top: 90px;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--bs-dark);
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--bs-neon), transparent 70%);
            border-image-slice: 1;
            box-shadow: 0 4px 30px rgba(0, 0, 0, .18);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 72px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff !important;
            letter-spacing: .5px;
        }

        .navbar-brand span {
            font-size: 1rem;
            font-weight: 400;
            color: var(--bs-neon);
            margin-left: 2px;
            margin-top: 4px;
        }

        .navbar-nav .nav-link {
            color: #C6D0E3;
            font-size: .95rem;
            font-weight: 500;
            padding: 24px 18px;
            position: relative;
            transition: color .25s ease, text-shadow .25s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
        }

        .navbar-nav .nav-link.active {
            color: #fff;
            text-shadow: 0 0 10px var(--bs-neon);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 0;
            height: 2px;
            background: var(--bs-neon);
            box-shadow: 0 0 12px var(--bs-neon);
        }

        .btn-bs-neon {
            background: var(--bs-neon);
            color: var(--bs-dark);
            border: none;
            border-radius: 999px;
            padding: 10px 26px;
            font-weight: 700;
            font-size: .95rem;
            transition: all .25s ease;
        }

        .btn-bs-neon:hover {
            background: #fff;
            color: var(--bs-dark);
            box-shadow: 0 0 18px rgba(0, 212, 255, .5);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, .25);
            background: transparent;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .nav-cta {
            margin-left: 18px;
            padding: 10px 24px;
            font-size: .9rem;
            white-space: nowrap;
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                background: var(--bs-dark);
                padding: 12px 20px 24px;
                border-radius: 0 0 16px 16px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, .25);
            }

            .navbar-nav .nav-link {
                padding: 12px 8px;
                border-bottom: 1px solid rgba(255, 255, 255, .06);
            }

            .navbar-nav .nav-link.active::after {
                bottom: 0;
                left: 8px;
                right: auto;
                width: 32px;
                height: 2px;
            }

            .nav-cta {
                margin: 16px 0 0;
                display: inline-block;
                text-align: center;
            }
        }

        /* 分类页 Hero */
        .category-hero {
            position: relative;
            padding: 150px 0 60px;
            background: linear-gradient(135deg, #F0F6FE 0%, #E8F1FB 50%, #DCEBFB 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: url('/assets/images/backpic/back-1.webp') no-repeat center center/cover;
            opacity: .15;
            pointer-events: none;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            right: 60px;
            bottom: 40px;
            width: 120px;
            height: 2px;
            background: var(--bs-neon);
            opacity: .7;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-custom {
            font-size: .85rem;
            color: var(--bs-text-2);
            margin-bottom: 18px;
        }

        .breadcrumb-custom a {
            color: var(--bs-main);
        }

        .breadcrumb-custom .sep {
            margin: 0 8px;
            color: #9AA7BE;
        }

        .category-hero h1 {
            font-size: clamp(2rem, 3.6vw, 2.8rem);
            font-weight: 700;
            color: var(--bs-text);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .category-hero h1 .highlight {
            color: var(--bs-main);
            position: relative;
        }

        .category-hero .lead-text {
            font-size: 1.06rem;
            color: var(--bs-text-2);
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-badge {
            background: rgba(255, 255, 255, .7);
            border: 1px solid rgba(22, 104, 227, .12);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: .85rem;
            color: var(--bs-text);
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: var(--bs-amber);
            margin-right: 4px;
        }

        /* 大数字统计 */
        .stats-section {
            padding: 40px 0 0;
            margin-top: -20px;
            position: relative;
        }

        .stat-card {
            background: transparent;
            text-align: center;
            padding: 20px 12px;
        }

        .stat-number {
            font-size: clamp(2rem, 3vw, 2.8rem);
            font-weight: 700;
            color: var(--bs-main);
            line-height: 1.2;
        }

        .stat-label {
            font-size: .9rem;
            color: var(--bs-text-2);
            margin-top: 4px;
        }

        .stat-divider {
            width: 1px;
            background: rgba(22, 104, 227, .12);
            min-height: 64px;
        }

        @media (max-width: 767px) {
            .stats-section {
                margin-top: 0;
                padding: 32px 0 0;
            }

            .stat-divider {
                display: none;
            }

            .stat-card {
                padding: 16px 8px;
            }
        }

        /* 编号清单区 */
        .guide-section {
            padding: var(--bs-space) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header .eyebrow {
            display: inline-block;
            background: rgba(22, 104, 227, .08);
            color: var(--bs-main);
            font-size: .8rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 16px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .section-header h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            color: var(--bs-text);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .section-header .section-desc {
            color: var(--bs-text-2);
            max-width: 680px;
            margin: 0 auto;
            font-size: .98rem;
        }

        .guide-wrap {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .guide-list {
            flex: 1;
        }

        .guide-item {
            display: flex;
            gap: 22px;
            padding: 22px 0;
            border-bottom: 1px solid var(--bs-line);
        }

        .guide-item:last-child {
            border-bottom: none;
        }

        .guide-num {
            font-size: 2rem;
            font-weight: 700;
            color: rgba(22, 104, 227, .25);
            line-height: 1;
            min-width: 52px;
            font-family: "Inter", "PingFang SC", sans-serif;
        }

        .guide-content h3 {
            font-size: 1.12rem;
            font-weight: 600;
            color: var(--bs-text);
            margin-bottom: 6px;
        }

        .guide-content p {
            font-size: .92rem;
            color: var(--bs-text-2);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .guide-media {
            flex: 0 0 360px;
            position: relative;
        }

        .guide-media img {
            border-radius: var(--bs-radius-lg);
            box-shadow: var(--bs-shadow);
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 3/4;
        }

        .guide-media::after {
            content: "";
            position: absolute;
            right: -16px;
            bottom: -16px;
            width: 70%;
            height: 60%;
            border-radius: var(--bs-radius-lg);
            background: linear-gradient(135deg, rgba(0, 212, 255, .15), rgba(22, 104, 227, .08));
            z-index: -1;
        }

        @media (max-width: 991px) {
            .guide-wrap {
                flex-direction: column-reverse;
                gap: 32px;
            }

            .guide-media {
                flex: 0 0 auto;
                max-width: 320px;
                width: 100%;
                margin: 0 auto;
            }
        }

        @media (max-width: 575px) {
            .guide-item {
                gap: 14px;
                padding: 18px 0;
            }

            .guide-num {
                font-size: 1.5rem;
                min-width: 36px;
            }
        }

        /* 指标条区 */
        .metrics-section {
            padding: 0 0 var(--bs-space);
        }

        .metrics-inner {
            background: #fff;
            border-radius: var(--bs-radius-lg);
            box-shadow: var(--bs-shadow);
            padding: 48px;
            border: 1px solid rgba(8, 30, 60, .04);
        }

        .metrics-inner .section-header {
            margin-bottom: 40px;
        }

        .metric-row {
            margin-bottom: 24px;
        }

        .metric-row:last-child {
            margin-bottom: 0;
        }

        .metric-row .d-flex {
            justify-content: space-between;
            font-size: .92rem;
            margin-bottom: 8px;
        }

        .metric-row .metric-label {
            font-weight: 600;
            color: var(--bs-text);
        }

        .metric-row .metric-value {
            font-weight: 700;
            color: var(--bs-main);
            font-family: "Inter", "PingFang SC", sans-serif;
        }

        .progress-custom {
            height: 8px;
            background: rgba(22, 104, 227, .08);
            border-radius: 999px;
            overflow: hidden;
        }

        .progress-custom .progress-bar-custom {
            height: 100%;
            background: linear-gradient(90deg, var(--bs-main), #3D8BF7);
            border-radius: 999px;
            position: relative;
        }

        .progress-custom .progress-bar-custom::after {
            content: "";
            position: absolute;
            right: 0;
            top: 0;
            width: 16px;
            height: 100%;
            background: var(--bs-neon);
            border-radius: 999px;
            box-shadow: 0 0 8px var(--bs-neon);
            opacity: .7;
        }

        @media (max-width: 767px) {
            .metrics-inner {
                padding: 32px 24px;
            }
        }

        /* 2x2 小卡片 */
        .feature-cards-section {
            padding: 0 0 var(--bs-space);
        }

        .feature-card {
            background: var(--bs-card);
            border-radius: var(--bs-radius);
            border: 1px solid var(--bs-line);
            box-shadow: var(--bs-shadow);
            padding: 28px 24px;
            height: 100%;
            display: flex;
            gap: 18px;
            transition: all .25s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bs-shadow-hover);
            border-color: rgba(22, 104, 227, .16);
        }

        .feature-icon {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(22, 104, 227, .08);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .feature-icon svg {
            width: 24px;
            height: 24px;
            fill: var(--bs-main);
        }

        .feature-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--bs-text);
            margin-bottom: 6px;
        }

        .feature-body p {
            font-size: .9rem;
            color: var(--bs-text-2);
            margin-bottom: 0;
            line-height: 1.65;
        }

        @media (max-width: 575px) {
            .feature-card {
                padding: 20px 18px;
                gap: 14px;
            }
        }

        /* FAQ */
        .faq-section {
            padding: 0 0 var(--bs-space);
        }

        .faq-inner {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--bs-line);
            padding: 6px 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--bs-line);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--bs-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color .25s ease;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--bs-main);
        }

        .faq-question .faq-icon {
            flex: 0 0 28px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(22, 104, 227, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .25s ease;
        }

        .faq-question .faq-icon svg {
            width: 16px;
            height: 16px;
            fill: var(--bs-main);
            transition: transform .25s ease;
        }

        .faq-question[data-expanded="false"] .faq-icon svg {
            transform: rotate(0deg);
        }

        .faq-question[data-expanded="true"] .faq-icon svg {
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            padding: 0 28px 20px 0;
            font-size: .94rem;
            color: var(--bs-text-2);
            line-height: 1.75;
        }

        .faq-answer.show {
            display: block;
        }

        /* CTA */
        .cta-section {
            padding: 0 0 96px;
        }

        .cta-box {
            position: relative;
            background: linear-gradient(120deg, #F0F6FE, #E7F4FB 60%, #DDF2F7);
            border-radius: 24px;
            padding: 72px 48px;
            text-align: center;
            overflow: hidden;
            border: 1px solid rgba(0, 212, 255, .12);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--bs-neon), transparent);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            right: -40px;
            bottom: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 212, 255, .18), transparent 70%);
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            color: var(--bs-text);
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: var(--bs-text-2);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }

        .cta-box .btn-bs-neon {
            font-size: 1.05rem;
            padding: 14px 40px;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 767px) {
            .cta-box {
                padding: 48px 24px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--bs-dark);
            color: #C6D0E3;
            padding: 72px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--bs-neon), transparent 60%);
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }

        .footer-brand span {
            font-size: 1rem;
            color: var(--bs-neon);
            font-weight: 400;
        }

        .footer-desc {
            font-size: .9rem;
            line-height: 1.75;
            color: #8E9BB3;
            margin-top: 12px;
            max-width: 320px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            color: #8E9BB3;
            font-size: .92rem;
            transition: color .25s ease;
            position: relative;
        }

        .footer-col ul a:hover {
            color: var(--bs-neon);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: .88rem;
            color: #8E9BB3;
            line-height: 1.6;
        }

        .footer-contact svg {
            width: 18px;
            height: 18px;
            fill: var(--bs-neon);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            font-size: .85rem;
            color: #6B7A94;
            text-align: center;
        }

        /* 通用按钮 */
        .btn-bs-primary {
            background: var(--bs-main);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .25s ease;
        }

        .btn-bs-primary:hover {
            background: var(--bs-main-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(22, 104, 227, .25);
        }

        .btn-bs-outline {
            background: #fff;
            color: var(--bs-main);
            border: 1px solid var(--bs-main);
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .25s ease;
        }

        .btn-bs-outline:hover {
            background: var(--bs-main);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(22, 104, 227, .2);
        }

        @media (max-width: 575px) {
            :root {
                --bs-space: 56px;
            }

            .hero-badges {
                gap: 8px;
            }

            .hero-badge {
                font-size: .8rem;
                padding: 4px 12px;
            }
        }